5638973 has 4 divisors (see below), whose sum is σ = 5651040. Its totient is φ = 5626908.

The previous prime is 5638967. The next prime is 5639003. The reversal of 5638973 is 3798365.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3798365 = 5 ⋅759673.

It is a cyclic number.

It is not a de Polignac number, because 5638973 - 2⁴ = 5638957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5638973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5303 + ... + 6276.

It is an arithmetic number, because the mean of its divisors is an integer number (1412760).

Almost surely, 2^5638973 is an apocalyptic number.

It is an amenable number.

5638973 is a deficient number, since it is larger than the sum of its proper divisors (12067).

5638973 is a wasteful number, since it uses less digits than its factorization.

5638973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12066.

The product of its digits is 136080, while the sum is 41.

The square root of 5638973 is about 2374.6521850578. The cubic root of 5638973 is about 177.9918041086.

The spelling of 5638973 in words is "five million, six hundred thirty-eight thousand, nine hundred seventy-three".